Harrow



April 5, .1927. 1 1,623,114

R. C. HAUGLAND HARROW Filed June 24. 1926 Inventor Prize/"a7 Cjzazzfzancz Attorney Patented Apr. 5, 1927.

UNITED STATES 'nrc'nnfm e Hanoi-Jenn, oi -JACKSON; MINNESOTA.

HARROW.

Application; filed Junev 24,

This invention has reference to an improved harrow, and; it has for itsprimary object to' provide a structure of this kind. wherein theharrowis composed, of foldable sections capable of, occupying, acomparatively small space. when, not in, use,;or being folded. into acomparatively small. 'condi tion when drawn through gateways and thelike, and which may be adjusted to extend over a relatively wide. area.of; ground,

I am well. aware of. the fact that a sectional 21-]1Clf foldable harrowfor this purpose is broadly old, but I believe that the structure whichI employ is an improvement upon anything of this kind that has beenpatented or used up to the present time, this statement being made afteran extensive search to familiarize myself with the general state of theart to which the invention relates.

The primary feature of construction of the improved harrow is thespecial hinge employed between the main central section and theend-sections, which allows these to be folded either to extend in aplane with the main section, below. it, or above it, whereby toaccommodate the irregularity in the surface traversed.

Other features and advantages of the invention will become apparent fromthe following description and drawings.

In the accompanying drawings forming a part of this application, and inwhich like numerals are employed to designate like parts throughout thesame:

Figure 1 is a top plan view of an improved harrow constructed inaccordance with the present invention.

Figure 2 is an enlarged fragmentary view showing the details ofconstruction more plainly, and

Figure 3 is a perspective view of one of the parts of the improvedhinge.

Referring to the drawings in detail, will be seen that the referencecharacter 1 designates the main section, which is of somewhat customarydesign, the same being provided with I-bolts 2, with which rods 3 of thedraft appliance are connected at their outer ends. At their inner ends,these rods are connected with an attaching eye 4 and an additional braceand equalizing member 5 is attached to the center of the main harrow 1and at its outer end to the ring 4.

As before stated, the feature of novelty in this case is the improvedhinge which is 1926. Serial K0. 113,374;-

composed of complemental parts 6 and. 7 respectively. As thehinge is thesame at both ends; of the main harrow member 1, a description. ofonehinge construction will suflice fQlijbQtll. Referring. first to Figure3, it will be seen. that the parts herereprerented; are of.channel-shaped cross section, the. same. comprisingv spaced. parallelwalls 8' and a central connecting. web or, wallfQ. The walls 8 terminatein. apertiired'. ears" 1 0 and the central web" 9- isv provided with. an

extension 11 terminating in a pintle bearing.

12. The complemental part is also of channeled cross section andembodies side walls 13 and central walls 14. Then, too, as shown inFigure 1 it is provided with a pair of spaced bearings 15, for passageof the hinge pintle 16. In this connection, it will be noted that theparts 11 and 12 are disposed between the bearings 15 and the hingepintle passes between these and also through the apertured ears 10, thusproviding a hinge connection which allows swinging of the end sect-ions17 in a vertical plane about a horizontal axis. This type of aconnection, however, prevents relative side movement of the sections 1and 17. Both of the parts 6 and 7 are secured to their respective harrowsections by connecting bolts 18.

If desired, flexible connections 19 may be connected with theintermediate portion of the draft bars 3 and with the central portionsof the end sections 17 of the harrow.

From the foregoing description, it is apparent that either one or bothof the end sections '17 may be arranged in the same plane with the maincentral section 1 to. increase the width of the harrow in order that itmay cover a greater areaof ground than would be the case where a singleharrow bar is employed. The advantage of the structure, however, is thatthe central section 1 may be drawn over a comparatively flat portion ofground, the section 17 may incline upwardly on a slight hill, while theouter end section may swing to assume a downward inclination for asloping portion of ground. The end sections, however, at all timesmaintain longitudinal alignment with the central section 1. The downwardswinging is, of course, limited. Attention is further directed to thefact that the load is exerted upon the central section of the harrow,thus removing undue strain from the two end sections. However, the pullis distributed to the end sections through the flexible chains 19, andthereis no unusual tendency to break the hinge connection. Moreover,these flexible chains do not interfere with the upward or downwardswinging movement of the end sections, and in fact allow the sections tobe folded up on top of the central section so that a relative- 1y narrowharrow is provided, thus permitting it to be drawn through gateways orto permit it to be arranged in compact bundles for storage. Otheradvantages and features accompany this structure and will he evident tothose familiar with structures of this kind. However, it is thoughtunnecessary to go into detail about these, since it is the structuraldetails that are relied upon for p atentability. Therefore, a morelengthy description is thought unnecessary.

Minor changes coming within the field of invention claimed may beresorted to if desired.

I claim:

In a harrow structure of the class described, a main harrow section andrelatively movable end sections, and a hinge structure between theadjacent ends of said sections, said hinge structure embodying a pair ofcomplemental parts, each of which is of channel-shaped cross section andis fastened to the complemental end of said sections, one of said partsbeing provided with a pair of spaced projecting pintle receivingbearings, and the other part being provided with a centrally disposedsingle projecting pintle receiving bearing disposed between the firstnamed bearings, together with apertured ears located on the outer sidesof the first named pair of bearings, and a pintle connecting pin passingthrough said bearings and apertures in said cars.

In testimony whereof I aflix my signature.

RICHARD C. HAUGLAND.

